It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Gorillas can catch human colds and other illnesses.
205
A domestic cat can sprint at about 31 miles per hour.
274
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Sharks, like other fish, have their reproductive organs in their chests.
248
Domestic pigs average a top speed of about 11 miles per hour.
182